Sep 16, 2019 design and implementation of a practical flex paging decoder. The advantage over using a normal scanner and soundcard is no need for a. Whitepaper encryption for pocsag and flex paging systems. Flex flexible wide area paging protocol is motorolas high speed oneway paging protocol that supports 1600, 3200, and 6400 bps. Wex international is dedicated to help industries such as restaurants, hospitals, retail, business offices, warehousing, healthcare, etc. An open source decoder for the flex paging protocol. Since 2003, peter hunt has developed pdw to the most important free. Whie searching for a decoder for a particular mode that is only commercially available so it seems i came across this decoding software and decided to give it a try. There exists pocsag decoder software that takes an audio signal into your sound card, from any basic fm scanner. We do this by providing a complete array of pagers for corresponding paging systems. The design and construction of a flex paging protocol decoder is discussed in detail. Paging serial receiver psr3000 paging receiver and decoder.
May 25, 20 the rtlsdr software defined radio combined with sdrsharp, and a pocsag flex capable decoding application can be used to decode pager messages. The flex data words are then sent by the decoder to an external computer through a serial link for bit processing and storage. Pdw has many users worldwide, from radio enthusiasts to professionals. Pocsag decoder software is able to display pager messages by using a normal radio scanner, a computer and a soundcard. Aug 12, 2017 17 thoughts on flex pager protocol in depth. Using the commandfile external software can be called. But this all depends on individual software and receive circumstances. Paging data terminal receiver alarm decoder encoder. If you find yourself in possession of some old pocsag pagers, you. Paging serial receiver psr3000 is a powerful and low cost paging receiver decoder with a single serial data or ttl output. Flex pager, pocsag pager pager manufacturer flex pager. However im now on windows 10 and after taking a break from radio related things for about a year im trying to get this to run again with not much luck.
Pocsag transmissions of different speeds and different paging protocols e. Texas instruments produces flex decoder chips and makes some flex developer documentation available at the bottom of the page here. In house hospital and trauma dept pagers will most likely be pocsag 512, 1200, or 2400 or a mix of each including flex 9600. Pdt3000 paging data terminal paging data terminal the pdt3000 paging data terminal is a multifunction paging device capable of receiving messages and displaying them on a large x 40mm graphical lcd display. The former does the flex decoding, and the latter posts whatever it hears on his. Contribute to discriminatorpdw development by creating an account on github. Flex uses either 2fsk or 4fsk4level frequency shift keying. I was wondering if there is anyway to get the older decoding software called pdw to work with these applications through the vac. Ideally for pocsag decoding you want a scanner with a discriminator output but im using an icom icr2 and this doesnt have one. Flex flexible wide area paging protocol is motorolas high speed. Motorola flex protocol references embedded artistry. Pocsag post office code standardisation advisory group, also known as superpocsag, radio paging code no. Paging operators are looking at flex because it is a faster data rate system that allows more users within the same bandwidth.
A piece of software called multimon was found to allow some of these data transmissions to be. Pocsag decoder software is able to display pager messages by using a. One side of the interface is connected to the discriminator output, the other side to the pcs serial port. Pe clive coopers g8ukn pocsag encoder for dos and more recently. Flex can transmit tone, numeric, alphanumeric, and binary data. Any non flex transmission immediately following a flex messages ends the flex batch. Flex can transmit numeric, alphanumeric, and binary data. For flex networks which use dynamic groupcalls the options use flex group mode and log groupcodes, but dont show them can be selected. Paging receiver connects directly to flex decoder the zif100600 chipset forms a twochip receiver for flex oneway paging applications. As a trusted pager manufacturer, we can supply products for use in restaurant, hospital, and retail paging systems. W2092f numeric pager, flex pager, pocsag pager wex. Pocsag, flex paging sdr software defined radio hak5. The pde1 can transmit pocsag at 512, 1200, or 2400 baud and offers up to 10 precanned messages.
Motorola has an introduction to paging and has been very successful in marketing their flex family of paging protocols. Apart from selecting capcodes to be encrypted, the encryption system is completely. For transmitting fsk frequency shift keying method is used with a 4. Pager paging fire pager psr2000 paging data receiver. Message pagerenc ffmpeg f s16le ar 22050 ac 1 i ar 44100 output. Our range of numeric pager boasts small size and stable performances. Setting up and installing pdw paging decoder software makers. Open sdrsharp and set the audio piping method to the one you will use under the audio output drop down box and then press play. The rtlsdr software defined radio combined with sdrsharp, and a pocsagflex capable decoding application can be used to decode. The decoder is designed to handle bit sampling, bit clock synchronization, flex packet detection, and flex data word collection. This link is listed in our web site directory since thursday oct 9 2008, and till today pdw paging decoder has been followed for a total of 6701 times. If you dont know what a pager is, since they are now uncommon, here is a brief explanation from wikipedia. Doc no 1001034b page 4 of 22 a single character to be transmitted to air, maintaining network capacity, even after encryption is implemented.
An interesting decoding project that people seem to be having some success with can be found here. One side of the interface is connected to the discriminator output, the other side to the pcs usb or serial port. A general discussion on the flex stack oneway software protocol will be covered with emphasis on architectural requirements. The zif100 directconversion receiver chip reproduces iq signals from either 2fsk or 4fsk transmission, while the zif600 demodulator and pager synthesizer provides channel selection. The pde1 pages and dials in pocsag, 2tone, 5tone, dtmf and pulse tone. About pdw paging decoder the resource is currently listed in in a single category. The main category is radio signal decoders that is about signal decoders. But as far as i know, dynamic groupcalls are only used in the netherlands. Mcore processor with onchip flextm decoder for messaging. Kantronics has discontinued selling their refurbished pagers. Its password protection function is for pc cap code programming software and hand programming.
Also, we can design decoder board, receiver decoder, etc. May 15, 2012 demonstration of funcube dongle, and pdw v3. Er zijn tegenwoordig heel wat communicatie technieken voor handen om met elkaar te communiceren zoals p2000 flex en het pagingnetwerk van kpn pocsag. In most countries it is perfectly legal to receive these messages. Alternatively, if there are any decent flex decoding apps known. An interesting flex decoding project used to be here, but has disappeared.
It incorporates an m16 processor which provides a significant amount of data processing capability. The kantronics kpc9612 tnc capable of sending pocsag or you can encode using a software computer program. Listed under the softwaredecoders category that is. Both standards are pretty old, pocsag was made at 1982, it can support 512, 1200 and 2400 bits speed. Jun 18, 20 pager message sniffing with rpi and sdr. Motorola flex p2000 decoding provides a useful introduction to flex signaling, message structure, and building a decoder. Flex 1600bps mobitex 8000bps using two dip switches on the interface, 4 data speeds can be selected. Jul 26, 2012 pocsag post office code standards advisory group is a common paging transmission format. Hi ive recently been experimenting with newly acquired sdrs rsp pro and airspy. Some additional information might be found here, although even he appears to have disappeared. The psr2000 is a powerful but low cost paging receiver decoder with a single serial data or ttl output.
The flex series paging patch is a full featured phone patch that combined the features of the legendary cs900, cs800, cs9800, and cs8200 phone patches along with a few additional features. Dapnet decentralized amateur paging network pagers you had two options here. This article is an effort for doing the same task using only software code. You could read the encoding key from the header, by firing up any wav file analysis. With this setup you can receive pager messages from all pager users on the system. A pager is a wireless telecommunications device that receives. These projects can serve as useful references if you run into a problem decoding flex messages. There exists pocsag decoder software that takes an audio signal into. Feb 23, 2006 the pager uses a protocol named pocsag or post office code standardization advisory group code. Paging serial receiver psr3000 paging receiver and. We guess you can find out by building your own software define radio pager message decoder.
A receiver with a discriminator output or 9600 bps packet radio output. It uses the first message to synchronize the decoder, so it cant decode that message. Set the receive mode to nfm, filter bandwidth to 12500 hz, filter order to 10, turn squelch off and filter audio off. Flex is a bit newer was made by motorola in 90th, it can work with up to 6400 bits speed and can use both fsk2 and fsk4. Design and implementation of a practical flex paging decoder grayson wireless 2 motorola inc. This is an opensource implementation of the flex paging protocol encoder by dl1com and dc1mil. Apparently it is abandonware or a part of a formally commercial software company that is no longer in business. Combined with a suitable receiver, preferably with a discriminatortap, pdw can be used for offair decoding of pocsag, flex, acars. A pc with a usb port or serial port also pci or pcmcia card an interface. Thus, this numeric pager can be widely applied in guest paging system, waiter paging system, hospital paging system, and so on.
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